1、无缓冲channel
示例:
package main import ( "fmt" "time" ) func main() { //创建一个无缓存的channel ch := make(chan int, 0) //len(ch)缓冲区剩余数据个数, cap(ch)缓冲区大小 fmt.Printf("len(ch) = %d, cap(ch)= %d\n", len(ch), cap(ch)) //新建协程 go func() { for i := 0; i < 3; i++ { fmt.Printf("子协程:i = %d\n", i) ch <- i //往chan写内容 } }() //延时 time.Sleep(2 * time.Second) for i := 0; i < 3; i++ { num := <-ch //读管道中内容,没有内容前,阻塞 fmt.Println("num = ", num) } }
执行结果:
len(ch) = 0, cap(ch)= 0 子协程:i = 0 num = 0 子协程:i = 1 子协程:i = 2 num = 1 num = 2
原文地址:https://www.cnblogs.com/nulige/p/10278231.html
时间: 2024-10-08 13:25:08